/*
 * [New BSD License]
 * Copyright (c) 2011-2012, Brackit Project Team <info@brackit.org>  
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Brackit Project Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.brackit.xquery.xdm.type;

import org.brackit.xquery.QueryException;
import org.brackit.xquery.atomic.Atomic;
import org.brackit.xquery.xdm.Item;
import org.brackit.xquery.xdm.Type;

/**
 * 
 * @author Sebastian Baechle
 * 
 */
public class AtomicType implements ItemType {
	/**
	 * xs:boolean
	 */
	public static final AtomicType BOOL = new AtomicType(Type.BOOL);

	/**
	 * xs:string
	 */
	public static final AtomicType STR = new AtomicType(Type.STR);

	/**
	 * xs:double
	 */
	public static final AtomicType DBL = new AtomicType(Type.DBL);

	/**
	 * xs:int
	 */
	public static final AtomicType INT = new AtomicType(Type.INT);

	/**
	 * xs:integer
	 */
	public static final AtomicType INR = new AtomicType(Type.INR);

	/**
	 * xs:decimal
	 */
	public static final AtomicType DEC = new AtomicType(Type.DEC);

	/**
	 * xs:dateTime
	 */
	public static final AtomicType DATI = new AtomicType(Type.DATI);

	/**
	 * xs:date
	 */
	public static final AtomicType DATE = new AtomicType(Type.DATE);

	/**
	 * xs:time
	 */
	public static final AtomicType TIME = new AtomicType(Type.TIME);

	/**
	 * xs:duration
	 */
	public static final AtomicType DUR = new AtomicType(Type.DUR);

	/**
	 * xs:dayTimeDuration
	 */
	public static final AtomicType DTD = new AtomicType(Type.DTD);

	/**
	 * xs:yearMonthDuration
	 */
	public static final AtomicType YMD = new AtomicType(Type.YMD);

	/**
	 * xs:QName
	 */
	public static final AtomicType QNM = new AtomicType(Type.QNM);

	/**
	 * xs:anyURI
	 */
	public static final AtomicType AURI = new AtomicType(Type.AURI);

	/**
	 * xs:anyAtomicType
	 */
	public static final AtomicType ANA = new AtomicType(Type.ANA);

	private final Type type;

	public AtomicType(Type type) {
		this.type = type;
	}
	
	public Type getType() {
		return type;
	}

	@Override
	public boolean isAnyItem() {
		return false;
	}

	@Override
	public boolean isAtomic() {
		return true;
	}

	@Override
	public boolean isNode() {
		return false;
	}

	@Override
	public boolean isFunction() {
		return false;
	}
	
	@Override
	public boolean isListOrUnion() {
		return false;
	}
	
	@Override
	public boolean isRecord() {
		return false;
	}

	@Override
	public boolean matches(Item item) throws QueryException {
		return (item instanceof Atomic)
				&& ((Atomic) item).type().instanceOf(type);
	}

	public boolean instanceOf(AtomicType other) {
		return type.instanceOf(other.type);
	}

	public String toString() {
		return type.toString();
	}

	public boolean equals(Object obj) {
		return ((obj == this) || ((obj instanceof AtomicType) && (((AtomicType) obj).type
				.equals(type))));
	}
}
